Question

Find the regression​ equation, letting the diameter be the predictor​ (x) variable. Find the best predicted...

Find the regression​ equation, letting the diameter be the predictor​ (x) variable. Find the best predicted circumference of a marble with a diameter of 1.5 cm. How does the result compare to the actual circumference of 4.7 ​cm? Use a significance level of 0.05.

Baseball

Basketball

Golf

Soccer

Tennis

​Ping-Pong

Volleyball

Diameter

7.4

24.1 4.3 21.5 7.1 4.0 21.2

Circumference

23.2

75.7

13.5

67.5

22.3

12.6

66.6

The regression equation is

​(Round to five decimal places as​ needed.)

The best predicted circumference for a diameter of 1.5 cm is nothing cm.

​(Round to one decimal place as​ needed.)

How does the result compare to the actual circumference of 4.7 ​cm?

A.Even though 1.5 cm is beyond the scope of the sample​ diameters, the predicted value yields the actual circumference.

B.Since 1.5 cm is within the scope of the sample​ diameters, the predicted value yields the actual circumference.

C.Since 1.5 cm is beyond the scope of the sample​ diameters, the predicted value yields a very different circumference.

D.Even though 1.5 cm is within the scope of the sample​ diameters, the predicted value yields a very different circumference.

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